[Plugin ACF] Indicate blog posts in search results

I’d like to find a way to indicate in search results whether something is a blog post or a page. I’ve tried various solutions from this forum, and nothing’s working.

I use Advanced Custom Fields throughout my site, and those on blog posts are different from those on pages. The simplest way – it seems to me – to indicate something is a blog post is, in search results, to do something like:

<?php while ( have_posts() ) : the_post();
 $blog = a_blog_only_acf_field;
 $themeta = get_post_meta($post->ID, $blog, TRUE);
if($themeta != '') {
echo 'This is a blog';
}

?>

Am I referencing an ACF field in the wrong way? Or is there an easier way to identify if something is a page or a post?

Thanks!